* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --sidebar-width-expanded: 240px;
    --sidebar-width-collapsed: 72px;
    --primary: #2563eb;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #f59e0b;
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f5f5f5;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --shadow-color: rgba(0,0,0,0.1);
    --card-bg: #ffffff;
}

body[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #475569;
    --shadow-color: rgba(0,0,0,0.3);
    --card-bg: #1e293b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    display: flex;
    height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s, color 0.3s;
}

/* ============================================ */
/* SIDEBAR */
/* ============================================ */
.sidebar {
    width: var(--sidebar-width-collapsed);
    background: var(--bg-secondary);
    box-shadow: 2px 0 8px var(--shadow-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width 0.3s cubic-bezier(.4,0,.2,1);
    height: 100vh;
    overflow: hidden;
    z-index: 100;
}

.sidebar.expanded {
    width: var(--sidebar-width-expanded);
}

.sidebar-header {
    padding: 1rem 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.logo-wrapper {
    display: flex;
    align-items: center;
    overflow: hidden;
}

.sidebar-logo {
    width: 48px;
    height: auto;
    flex-shrink: 0;
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    max-width: 0;
    margin-left: 0;
    opacity: 0;
    overflow: hidden;
    transition: opacity 0.2s, max-width 0.3s, margin-left 0.3s;
}

.sidebar.expanded .sidebar-title {
    max-width: 200px;
    margin-left: 0.75rem;
    opacity: 1;
}
.sidebar-nav {
    list-style: none;
    padding: 0.5rem;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

.nav-item {
    margin-bottom: 0.25rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    color: var(--text-primary);
    transition: background 0.2s;
    white-space: nowrap;
}

.nav-link:hover {
    background: var(--bg-tertiary);
}

.nav-link.active {
    background: var(--primary);
    color: white;
}

.nav-link.active i {
    color: white;
}

.nav-link i {
    width: 20px;
    text-align: center;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.link-text {
    opacity: 0;
    transition: opacity 0.2s;
}

.sidebar.expanded .link-text {
    opacity: 1;
}

.nav-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.75rem 0;
}



.sidebar-footer {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem 18px;
    border-top: 1px solid var(--border-color);
    overflow: hidden;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0;
    background: none;
    border: none;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
    overflow: hidden;
}

.user-info:hover .user-avatar {
    box-shadow: 0 0 0 2px var(--primary);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    opacity: 0;
    transition: opacity 0.2s;
}

.sidebar.expanded .user-name {
    opacity: 1;
}

.footer-actions {
    display: flex;
    gap: 0.5rem;
}

.theme-toggle {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.theme-toggle, .logout-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.theme-toggle:hover {
    background: var(--primary);
    color: white;
}

.logout-btn:hover {
    background: var(--danger);
    color: white;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

/* ============================================ */
/* MAIN CONTENT */
/* ============================================ */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

.page-section {
    display: none;
}

.page-section.active {
    display: block;
}

h2 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

h3 {
    margin: 1rem 0 0.75rem;
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ============================================ */
/* STATS & DASHBOARD */
/* ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 1px 3px var(--shadow-color);
    text-align: center;
}

.stat-card.highlight {
    background: var(--primary);
    color: white;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.stat-card.highlight .stat-label {
    color: rgba(255,255,255,0.8);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

.chart-container, .top-qr-container {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 1px 3px var(--shadow-color);
}

.chart-container h3, .top-qr-container h3 {
    margin-top: 0;
    color: var(--text-primary);
}

#visits-chart {
    max-height: 250px;
}

.top-qr-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.top-qr-item:last-child {
    border-bottom: none;
}

.top-qr-name {
    font-weight: 500;
}

.top-qr-visits {
    color: var(--primary);
    font-weight: 600;
}

/* ============================================ */
/* GENERATOR */
/* ============================================ */
.generator-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
}

.generator-form, .preview-panel {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 1px 3px var(--shadow-color);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group small {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-group input {
    width: auto;
}

.style-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    align-items: end;
}

/* ============================================ */
/* PREVIEW */
/* ============================================ */
.preview-panel {
    position: sticky;
    top: 1.5rem;
}

#qr-preview {
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
}

.preview-actions, .export-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-bottom: 0.5rem;
}

/* ============================================ */
/* BUTTONS */
/* ============================================ */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: opacity 0.2s, transform 0.1s;
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-primary { background: var(--primary); color: white; }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-warning { background: var(--warning); color: white; }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.75rem; }

.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.4rem;
}

/* ============================================ */
/* QR LIST */
/* ============================================ */
.list-toolbar {
    margin-bottom: 1rem;
}

.filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filters input, .filters select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.filters input { flex: 1; min-width: 200px; }

#qr-table-container, .table-container {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 1px 3px var(--shadow-color);
    overflow-x: auto;
}

.qr-table {
    width: 100%;
    border-collapse: collapse;
}

.qr-table th, .qr-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.qr-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    font-size: 0.875rem;
}

.qr-table tbody tr:hover {
    background: var(--bg-tertiary);
}

.qr-table .qr-thumb {
    width: 50px;
    height: 50px;
    overflow: hidden;
}

.qr-table .qr-thumb canvas,
.qr-table .qr-thumb svg {
    width: 50px !important;
    height: 50px !important;
}

/* ============================================ */
/* STATUS BADGE & TOGGLE */
/* ============================================ */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.active {
    background: rgba(22,163,74,0.15);
    color: var(--success);
}

.status-badge.disabled {
    background: rgba(220,38,38,0.15);
    color: var(--danger);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: #ccc;
    border-radius: 24px;
    transition: 0.3s;
}

.toggle-slider:before {
    content: "";
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    top: 3px;
    background: white;
    border-radius: 50%;
    transition: 0.3s;
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--success);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(20px);
}

.status-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toggle-text {
    font-size: 0.875rem;
    font-weight: 500;
}

.toggle-text.active { color: var(--success); }
.toggle-text.disabled { color: var(--danger); }

/* ============================================ */
/* ACTIONS */
/* ============================================ */
.actions-cell { vertical-align: top; }

.actions-row {
    display: flex;
    gap: 0.25rem;
    justify-content: flex-end;
    margin-bottom: 0.35rem;
}

.actions-row:last-child { margin-bottom: 0; }

/* ============================================ */
/* MODAL */
/* ============================================ */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active { display: flex; }

.modal-content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    overscroll-behavior: contain;
    position: relative;
}

.modal-lg {
    max-width: 1100px;
    width: 95%;
}

.modal-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0 1rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: 1rem;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-content h3 {
    margin-top: 0;
    color: var(--text-primary);
}

.modal-content p { margin: 0.5rem 0; }
.modal-content a { color: var(--primary); word-break: break-all; }

.copy-btn {
    margin-left: 0.5rem;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

/* ============================================ */
/* MODALE PROFILO */
/* ============================================ */
.profile-modal {
    max-width: 380px;
    text-align: center;
}

.profile-avatar {
    width: 128px;
    height: 128px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0.5rem auto 1rem;
    display: block;
    box-shadow: 0 4px 16px var(--shadow-color);
}

.profile-name {
    margin: 0 0 0.25rem;
    font-size: 1.25rem;
}

.profile-email {
    margin: 0 0 0.75rem;
    color: var(--text-secondary);
    word-break: break-all;
}

.profile-company {
    margin: 0 0 1.5rem;
    font-weight: 500;
}

.profile-company i {
    color: var(--text-secondary);
    margin-right: 0.25rem;
}

.profile-modal .btn-danger {
    width: 100%;
    justify-content: center;
}

/* ============================================ */
/* DOMINIO PERSONALIZZATO */
/* ============================================ */
.domain-box {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    margin: 0.25rem 0 1rem;
}

.domain-box-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.domain-name {
    font-weight: 600;
    overflow-wrap: anywhere;
}

.domain-message {
    margin: 0.5rem 0 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.domain-message.ok { color: var(--success); }
.domain-message.err { color: var(--danger); }

.domain-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.status-badge.domain-none { background: rgba(107,114,128,0.15); color: var(--text-secondary); }
.status-badge.domain-pending { background: rgba(245,158,11,0.15); color: var(--warning); }
.status-badge.domain-active { background: rgba(16,185,129,0.15); color: var(--success); }
.status-badge.domain-error { background: rgba(239,68,68,0.15); color: var(--danger); }

/* ============================================ */
/* SEZIONI E AZIONI RAPIDE */
/* ============================================ */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.section-header h2 { margin: 0; }

.quick-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.empty-row {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.table-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    vertical-align: middle;
    margin-right: 8px;
}

.status-badge.admin {
    background: rgba(245,158,11,0.15);
    color: var(--warning);
}

.email-check { display: block; margin-top: 0.25rem; }
.email-check.ok { color: var(--success); }
.email-check.warn { color: var(--warning); }
.email-check.err { color: var(--danger); }

/* ============================================ */
/* COLOR PICKER */
/* ============================================ */
.color-picker-wrapper { position: relative; }

.color-picker-trigger {
    width: 100%;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 4px;
    gap: 8px;
    background: var(--bg-secondary);
}

.color-preview {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.color-value {
    font-size: 0.75rem;
    color: var(--text-primary);
}

.color-picker-popup {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1000;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-color);
    padding: 1rem;
    width: 280px;
    display: none;
}

.color-picker-popup.active { display: block; }

.color-picker-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.color-picker-tab {
    flex: 1;
    padding: 0.5rem;
    border: none;
    background: var(--bg-tertiary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.2s;
}

.color-picker-tab.active {
    background: var(--primary);
    color: white;
}

.color-picker-panel { display: none; }
.color-picker-panel.active { display: block; }

.color-spectrum {
    width: 100%;
    height: 150px;
    border-radius: 8px;
    cursor: crosshair;
    position: relative;
    margin-bottom: 0.75rem;
}

.color-spectrum-cursor {
    width: 16px;
    height: 16px;
    border: 2px solid white;
    border-radius: 50%;
    position: absolute;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 2px rgba(0,0,0,0.5);
    pointer-events: none;
}

.hue-slider {
    width: 100%;
    height: 16px;
    border-radius: 8px;
    cursor: pointer;
    position: relative;
    margin-bottom: 0.75rem;
    background: linear-gradient(to right, #ff0000, #ffff00, #00ff00, #00ffff, #0000ff, #ff00ff, #ff0000);
}

.slider-handle {
    width: 18px;
    height: 18px;
    background: white;
    border: 2px solid #333;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
    pointer-events: none;
}

.hex-input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.hex-input-group input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
    font-family: monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.color-presets {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 4px;
    margin-top: 0.75rem;
}

.color-preset {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 6px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform 0.1s;
}

.color-preset:hover {
    transform: scale(1.1);
    border-color: var(--text-primary);
}

.gradient-stops {
    position: relative;
    height: 24px;
    border-radius: 6px;
    margin-bottom: 0.75rem;
    cursor: pointer;
}

.gradient-stop {
    width: 14px;
    height: 14px;
    border: 2px solid white;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 3px rgba(0,0,0,0.5);
    cursor: pointer;
}

.gradient-stop.active {
    border-color: var(--primary);
    z-index: 1;
}

.angle-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.angle-wheel {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    position: relative;
    cursor: pointer;
    background: conic-gradient(from 0deg, #eee, #fff, #eee, #fff, #eee);
}

.angle-wheel-line {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50%;
    height: 2px;
    background: var(--primary);
    transform-origin: 0 50%;
    pointer-events: none;
}

.gradient-preview {
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 0.75rem;
}

.stop-color-picker {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.5rem;
}

.stop-color-preview {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.stop-actions {
    display: flex;
    gap: 0.25rem;
}

.btn-stop {
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
}

.logo-preview {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.logo-preview img {
    max-width: 60px;
    max-height: 60px;
    border-radius: 6px;
}

/* ============================================ */
/* LOGIN (pagine auth) */
/* ============================================ */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
}

.login-container {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.login-logo {
    max-width: 120px;
    margin-bottom: 1rem;
}

.login-container h1 {
    margin-bottom: 2rem;
}

.btn-google {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: box-shadow 0.2s;
}

.btn-google:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.alert {
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.alert-error {
    background: rgba(220,38,38,0.1);
    color: var(--danger);
    border: 1px solid rgba(220,38,38,0.3);
}

.alert-success {
    background: rgba(22,163,74,0.1);
    color: var(--success);
    border: 1px solid rgba(22,163,74,0.3);
}

/* ============================================ */
/* RESPONSIVE */
/* ============================================ */
@media (max-width: 1024px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .dashboard-grid { grid-template-columns: 1fr; }
    .generator-layout { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .style-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar.expanded {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        height: auto;
    }

    body.sidebar-open .main-content {
        margin-left: var(--sidebar-width-collapsed);
    }

    .sidebar-overlay.active {
        display: block;
    }

    .sidebar,
    .nav-link {
        touch-action: manipulation;
        -webkit-user-select: none;
        user-select: none;
    }

    .main-content {
        padding: 1rem;
        min-width: 0;
    }

    :root {
        --sidebar-width-collapsed: 56px;
        --sidebar-width-expanded: 220px;
    }

    .sidebar-header { padding: 0.75rem 8px; }
    .sidebar-logo { width: 40px; }
    .sidebar-nav { padding: 0.5rem 4px; }
    .nav-link { gap: 0.75rem; }
    .sidebar-footer { padding: 0.75rem 10px; }

    .main-content { padding: 0.75rem; }
    h2 { font-size: 1.25rem; margin-bottom: 1rem; }

    .section-header { margin-bottom: 1rem; }
    .quick-actions { flex-wrap: nowrap; gap: 0.5rem; }
    .quick-actions .btn {
        flex: 1 1 0;
        min-width: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.25rem;
        padding: 0.6rem 0.25rem;
        font-size: 0.75rem;
        line-height: 1.2;
    }
    .quick-actions .btn i { font-size: 1rem; }

    .stats-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-bottom: 1rem; }
    .stat-card { padding: 1rem 0.5rem; }
    .stat-value { font-size: 1.5rem; }
    .stat-label { font-size: 0.75rem; }
    .dashboard-grid { gap: 1rem; }
    .chart-container, .top-qr-container { padding: 1rem; }
    .top-qr-item { gap: 0.75rem; }
    .top-qr-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

    .filters { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
    #search, #filter-client { grid-column: 1 / -1; }
    .filters input, .filters select { width: 100%; min-width: 0; padding: 0.65rem; }

    #qr-table-container, .table-container { overflow-x: visible; background: none; box-shadow: none; }
    .qr-table thead { display: none; }
    .qr-table, .qr-table tbody, .qr-table tr { display: block; width: 100%; }
    .qr-table tr {
        background: var(--card-bg);
        border-radius: 12px;
        box-shadow: 0 1px 3px var(--shadow-color);
        padding: 0.75rem 1rem;
        margin-bottom: 0.75rem;
    }
    .qr-table tbody tr:hover { background: var(--card-bg); }
    .qr-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
        padding: 0.35rem 0;
        border: none;
        text-align: right;
        min-width: 0;
        overflow-wrap: anywhere;
    }
    .qr-table td::before {
        content: attr(data-label);
        flex-shrink: 0;
        font-size: 0.75rem;
        font-weight: 600;
        color: var(--text-secondary);
        text-align: left;
    }
    .qr-table td[colspan] { justify-content: center; }
    .qr-table td.actions-cell { flex-direction: column; align-items: stretch; padding-top: 0.75rem; border-top: 1px solid var(--border-color); margin-top: 0.35rem; }
    .qr-table td.actions-cell::before { content: none; }
    .actions-row { justify-content: flex-start; flex-wrap: wrap; gap: 0.5rem; }
    .td-hide-mobile { display: none !important; }

    #qr-table-body tr {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        column-gap: 1rem;
        row-gap: 0.5rem;
        align-items: start;
        padding: 1.25rem 1rem;
        margin-bottom: 1rem;
    }
    #qr-table-body td { padding: 0; text-align: left; }
    #qr-table-body .td-name,
    #qr-table-body .td-client,
    #qr-table-body .td-type {
        display: block;
        min-width: 0;
        overflow-wrap: anywhere;
        word-break: break-word;
    }
    #qr-table-body td::before { content: none; }
    #qr-table-body .td-thumb,
    #qr-table-body .td-tag,
    #qr-table-body .td-visits,
    #qr-table-body .td-date { display: none; }
    #qr-table-body .td-name { grid-column: 1; grid-row: 1; font-size: 1rem; line-height: 1.35; }
    #qr-table-body .td-status { grid-column: 2; grid-row: 1; justify-content: flex-end; }
    #qr-table-body .td-client { grid-column: 1; grid-row: 2; font-size: 0.85rem; line-height: 1.35; color: var(--text-secondary); }
    #qr-table-body .td-type { grid-column: 2; grid-row: 2; text-align: right; font-size: 0.75rem; font-weight: 600; color: var(--text-secondary); }
    #qr-table-body .actions-cell {
        grid-column: 1 / -1;
        grid-row: 3;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.75rem;
        margin-top: 0.75rem;
        padding-top: 1.25rem;
    }
    #qr-table-body .actions-row { margin-bottom: 0; justify-content: center; }
    #qr-table-body td[colspan] { grid-column: 1 / -1; justify-content: center; }
    .actions-row .btn { padding: 0.5rem 0.65rem; }

    .modal { padding: 0.5rem; }
    .modal-content, .modal-lg { width: 100%; padding: 1.25rem; max-height: 95vh; }
    .generator-form, .preview-panel { padding: 1rem; box-shadow: none; }
    .generator-layout { gap: 1rem; }
    .style-grid { grid-template-columns: 1fr 1fr; }
    .preview-actions, .export-actions { flex-wrap: wrap; }
    .modal-actions .btn, .preview-actions .btn { flex: 1; padding: 0.65rem 1rem; }

    .preview-panel {
        position: static;
    }
}